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TI-2018-00434 Aliases CVE-2018-0475GHSA-wr6p-fg29-rg69

Cisco IOS and IOS XE Software Cluster Management Protocol Denial of Service Vulnerability

Priority LOW 34CWE-20Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

A vulnerability in the implementation of the cluster feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation when handling Cluster Management Protocol (CMP) messages. An attacker could exploit this vulnerability by sending a malicious CMP message to an affected device. A successful exploit could allow the attacker to cause the switch to crash and reload or to hang, resulting in a DoS condition. If the switch hangs it will not reboot automatically, and it will need to be power cycled manually to recover.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00856 58th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco IOS Softwareall versions—No fix listedCNA
  • Cisco IOS Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:15.0\(2.0.0\):*:*:*:*:*:*:*15.0(2.0.0)VulnerableCisco
cpe:2.3:o:cisco:ios_xe:15.0\(2.0.0\):*:*:*:*:*:*:*15.0(2.0.0)VulnerableCisco
  • cpe:2.3:o:cisco:ios:15.0\(2.0.0\):*:*:*:*:*:*:* Versions 15.0(2.0.0) Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:15.0\(2.0.0\):*:*:*:*:*:*:* Versions 15.0(2.0.0) Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-0475
  2. 2026-10-03 Alias added: GHSA-wr6p-fg29-rg69

References

Advisory 1

  • TI-2018-00138 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-09019 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
  • TI-2017-04499 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
  • TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
See all 617 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences